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> >Muslim Magometovich Magomayev (Azerbaijani: Müslüm Məhəmməd oğlu Maqomayev
> huh, Muslim is a first name?
Yes, it is relatively common. I've seen people with that name and with variations, i.e Abdulmuslim or such.
Although in many languages word "Muslim" doesn't have direct meaning, so it doesn't look strange. For example, in Russian there is no such word, Muslim (person of religion) is musulmanin. In Azeri language it is "müsəlman".
Typical cultural thing. Remember the name Christian and it's variations.